Drying apparatus



(No Model.) 2 Sheets Sheet l.

W. D. SUNDERLIN.

'DRYING APPARATUS.

(No Model.) y 2 sheets-sheet 2.

W. D. SNDERLIN.

DRYING APPARATUS.

No. 481,212. Patented Aug. 23,1892.

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STATES ATENT OFFICE.

IVILLIAM D. SUNDERLIN, OF GREEN ISLAND, NEV YORK.

DRYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 481,212, dated August 23, 1892.

Application filed March l0, 1891. Serial No. 384,471. (No model.)

T0 all whom it may concern,.-

Be it known that I, WILLIAM D. SUNDERLIN, a citizen of the United States, residing at Green Island, in the county of Albany and State of New York, have inventedcertain new and useful Improvements in Apparatus for Drying Substances; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in apparatus for drying substances; and it consists in the combination of devices and elements hereinafter described.

The objects of this invention are, primarily, to provide with a furnace an inclined stationary flue, an inclined metal iioor heated by said iiue and separating the latter from a drying-chamber, which connects with a ventilating device and is provided with means for progressively moving the material being dried to a delivery-chamber situated over the furnace; second, to combine with aninclined metallic floor, separating a heating-flue below from a drying-chamber above, a deliverychamber at the terminus of said drying-chambei' and over the dre-chamber of the furnace and provided with coveredopenings for discharge of the material, anda reflecting-hood in front of the furnace set at an angle, and an air-inlet leading from the chamber of the hood to said delivery-chamber, drying-chamber, and a Ventilating device, and, thirdly, to provide particular combinations of devices by which the improvements in this invention may be embodied in an apparatus for dryin g substances or expelling water therefrom. I attain these objects bythe means illustrated in the accompanying drawings, forming a part of this specification, in which- Figure 1 is a sectional elevation, and Fig. 2 is a front elevation with a part shown in section.

The same letters of reference refer to like parts throughout the several views.

In the drawings, A represents a suitable furnace, of which A is the fire-chamber and A2 is the draft-chamber, serving, also, as an ash-pit. o, is the grate, and a is the {ire-wall at the rear end of the same. The tire-chamber A of the furnace communicates directly with the horizontal iue B, immediately rearward of said fire-wall a and beneath the rear portion of the arched-brick bed C.

B is an inclined flue communicating from iiue B to a suitable chimney or stack B2. The bottom of this iiue B is preferably made of brick supported on a suitable framework, made of timber or other suitable material. The upper side wall C of this inclined ue B is made of metal, preferably sheet-iron, suitably supported and secured between the side walls b h, which latter may be made of brick or metal, or of any suitable refractory material. This metal upper side Wall of inclined flue is the fioor of the drying-chamber D, which said iloor or wall C separates from said flue, and the said flue, floor, and drying-chamber are made, respectively, of the same length and width, the lengthbeing from twenty-live to seventy-five feet, more or less, according to the nature of the material to be dried or the degree of dryness required to be given to the material, while the width of the same will be according to the intended capacity of the apparatus. The rear end of flue B communicates through opening b to the smoke-stack or chimney B2, and the drying-chamber D communicates at its rear end with asuitable Ventilating device. Themetal door C between the drying-chamber and flue is arranged at an angle of from fifteen (15) degrees to thirty-tive (350) degrees, according to the natural specific gravity of the material to be progressively moved oversaid floor from its place of entrance c to its discharge into chamber E above the brick bed C over the fire-chamber Aand horizontal flue B. By reason of this great incline of the iioor C materials of higher specific gravity may be moved progressively forwardly and downwardly with greaterfacility and byan expenditure of less power than when the said floor is at a less angle or horizontal. The lesser angle of incline willbe sufficient for the same purpose with materials of less gravity.

The top wall or cover D of the dryingchamber D is made sectional and comprised by the sections d d, which are suitably supported and are removable at will. The top cover of the delivery-chamber E is also made sectional and is composed of several sections ce, suitably supported and removable at will,

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so that operators may have access to said chamber for operations for removal of the dried material from time to time, as may be required. The side walls Z) bof this chamber E are provided with discharge-openings e', having removable doors or covers e2, through which openings the said material may be discharged by means of a suitable rake, hoe, or other suitable instrument.

E is an air-inlet opening made in the front end wall Z9 of the chamber E.

F is a heat-deflecting hood which is arranged at an angle in front of the said wall and is preferablyT extended across from side to side of the front and is so hinged, as at f, as to be capable of being swung to any desired angle or be raised up out of the way, so that access may be had by an operator to the furnace-door for introducing fuel into the same. This air-inlet opening E is preferably made of small area, so that the volume of air admitted will be small and be moderately heated from the heat from the front of the furnace in the chamber formed between the front wall and the hood F before its passage through said opening E into the chamber E, in which it will be more highly heated, and thence have passage into the drying-chamber D to mingle with the vapor expelled from the material on the heated floor C of the said chamberD. This volume of dry and heated air operates to reduce the humidity of the chamber D without cooling the vapors rising from the materials being dried and mingles with said vapors and is carried with them to the Ventilating device employed in connection with said drying-chamber.

The drying-chamber D may be ventilated by any suitable means, as by the draft of the chimney when the latter is provided with a suitable opening, as at dotted lines d d', at the upper end of said drying-chamber; yet I prefer to use a Ventilating-fan G, drawing from the drying-chamberD through the conduit II and discharging the mingled heated air and vapor within the draft-chamber A2 to contribute tothe combustion of the fuel burning in the fire-chamber A.

I is an opening in the cover D of the drying-chamber D for the introduction of the material to within said chamber, and J is a suitable platform for receiving the material before it is introduced into the said chamber.

K is a carrier for elevating the material as it receives it from the feed-platform L and depositing it on the platform J.

M M constitute series of platforms for convenience of workmen, as iioors ou which to stand for removal or placement of the sections CZ d of the cover, or for operations with the material in the drying-chamber, as occasion may require.

N is an endless carrier arranged within the drying-chamber D for progressively moving the material from its place of deposit from platform J downwardly and forwardly over the heated floor C', over hue B to the rear end of the delivery-chamber E. This carrier N may be made of a series of two or more endless-link chains or wire cables carried by suitable sprocket-wheels or pulleys driven by any suitable power. Secured to these endless chains or cables at intervals are the horizontal bars or slats n fn, which when moving forward in direction toward the chamber E almost touch the upper surface of the metal floor C of the drying-chamberD and operate to progressively, though slowly, move the material, lying a few inch es deep on said Iioor, downwardly to the chamber E, from which it will be moved from time to time through the openings c e.

This apparatus is adapted to be used for drying sawdust, clays, sand, fertilizing substances, lime, mud, and other substances of solid nature.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

l. In a drying apparatus, the combination, with a furnace, flue B, and inclined iiue B', leading from the flue B, a smoke-stack with which the said flues communicate, covered delivery-chamber E and covered drying-chamber D, delivering to chamber E, a brick bed separating the delivery-chamber from the firechamber of the furnace, and an inclined metallic Iioor separating the said drying-chamber from the said inclinedf'l ue, of an air-inlet which communicates from the outside to the said delivery-chamber and an air-outlet for ventilating the said drying-chamber from its upper end,substantially as and for the purposes set forth.

2. In a drying apparatus, the combination, with a furnace, flue B, and an inclined Iiue B', leading from iiue B and to a suitable smokestack, covered delivery-chamber E and inclined drying-chamberD, delivering into said chamber E, a brick bed between the deliverychamber and the fire-chamber of the furnace, a metallic floor between the drying-chamber and the inclined iiue,an air-inlet to the delivery-chamber, and an air-outlet from the upper end of the d rying-chamber, of discharge-openings provided with doors in the walls of the delivery-chamber, and an endless carrier moving through said drying-chamber in direction from the air-outlet toward the delivery-chamber, substantially as and for the purposes set forth.

3. In a drying apparatus, the combination, with a furnace, flue B, and inclined flue B', leading from flue B and thence to a smokestack, covered delivery-chamber E and drying-chamber D, communicating with each other, a brick bed separating the deliverychamber from the fire-chamber of the furnace, a metallic floor separating the drying-chamber from the said inclined flue,and an air-inlet opening from without to the said deliverychamber, of an endless carrier working in the IOO IIO

said drying-chamber in direction toward the delivery-chamber, an air-conduit leading from the upper end of the drying-chamber, and a Ventilating-fan in the course of the said airconduit, substantially as and for the purpose set forth.

4t. In a drying apparatus, the combination, with a furnace, a delivery-chamber E, having in its Wall an air-inlet opening, an inclined drying-chamber communicating With said delivery-chamber, and an endless carrier Working in said drying-chamber in direction from its upper end toward the said delivery-chamber, of the adjustable hood F, capable of being heated by heat from the furnace and havabove set forth I affix my signature in pres- 25 ence of two Witnesses.

WILLIAM D. SUNDERLIN. Witnesses:

CHARLES SELKIRK, A. SELKIRK, Jr. 

